>> reporter: by sunrise, jittery police opened fire on this blue trick, similar to the suspect's. bum the people inside were just innocent bystanders. police are now closing ranks, protecting themselves. >> the los angeles police department and our allied law enforcement agencies are implementing all measures possible to ensure the safety of our lapd personnel, their families and the los angeles community. >> reporter: tonight, acnn's anderson cooper showed viewers a package he received from dorner. >> a yellow post-it note reading, in part, i never lied, in reference to his dismissal in 2008. late today, police spotted this truck, burning in the mountains northeast of l.a. it has now been confirmed that that was, indeed, the suspect's vehicle. but it has also been confirmed that the suspect was not inside. he appears to have fled, and, so, diane, the manhunt continues. >> all right, david, thank you. so, what else do we know about this man and what's behind that manifesto?